Bunty goes around a square park of length 80m. Hence, in 1 round he covers a distance of 80 × 4 = 320 m.
So, in 3 rounds he covers a distance of 320 × 3 = 960 m.
Bubly goes around a rectangular park of l = 90 m and b = 60 m. So in 1 round she covers a distance of 2( 90 + 60) = 300 m.
Hence, in 3 rounds she covers a distance of 300 × 3 = 900 m. Hence, Bunty covers a greater distance and by 60 m.